using System;class SolvesQuadraticequation{	static void Main()	{		Console.WriteLine("ax^2+bx+c=0");		Console.WriteLine("a:");		int a = int.Parse(Console.ReadLine());		Console.WriteLine("b:");		int b = int.Parse(Console.ReadLine());		Console.WriteLine("c:");		int c = int.Parse(Console.ReadLine());		int d = b*b - 4 * a * c;		Console.WriteLine("D: {0}",d);		double x1;		double x2;		if(d==0)		{			x1 = x2 = -b / (2*a);			Console.WriteLine("There is one real root.\nSolutions \n x1: {0:F2}", x1);		}		else if(d<0)		{			Console.WriteLine("There are no real root => No solution.");		}		else		{			x1 = (-b - Math.Sqrt(d) )/ (2*a);			x2 = (-b + Math.Sqrt(d) )/ (2*a);			Console.WriteLine("There are 2 real roots. \n Solutions \n x1: {0:F2} \n x2: {1:F2}", x1, x2);		}	}}